Excavating-bucket.



P. G. FRINK.

EXGAVATING BUCKET. APPLICATION FILED 001.10, 1911.

1,023,370. Patented Apr. 16, 1912.

W/TNESSES: INVENTOR: 6. fit W f/v/zr/J fimk JC 72%;, I 87 2 ATTORNEY COLUMBIA PLANOGRAI'H 60.. wAsHmuTqN. D1C.

FRANCIS Gr. FRINK, OF SEATTLE, WASHINGTON.

EXCAVATING-BUCKET.

Application filed. October 10, 1911.

To all whom it may concern:

Be it known that I, FRANoIs G. FRINK, a citizen of the United States, residing at Seattle, in the county of King and State of Vashington, have invented. certain new and useful Improvements in Excavating-Buckets, of which the following is a specification.

This invention relates to excavating apparatus wherein are employed scraper buckets which are filled by dragging them forwardly whereupon the loaded buckets are hoisted and carried by machinery to the place of dumping where the contents of the buckets are discharged by tilting the same.

The object of the present invention is the improvement in the devices whereby the loading and dumping of this class of scraper buckets are rendered more convenient and the strains are lessened upon the hoisting appliances obtaining when a bucket is being dumped.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of a scraper bucket with devices embodying my invention applied thereto. Fig. 2 is a side elevation of dredging apparatus showing my invention as utilized in the hoisting of a loaded bucket. Fig. 3 is a view similar to Fig. 2 illustrating the bucket in dumping position.

The reference numeral 5 designates the body of a scraper bucket provided with a bottom 6, sides 7 and a back end 8. At its front, said body is open and is formed with a bridge 9 connecting the upper portions of the sides 7 and provided with a centrally disposed longitudinal rib 9. Extending rearwardly from the back end 8 of the bucket-body is bracket 10 in which is journaled the arbor of a rope sheave 11.

Where the bucket is to be used for digging, teeth 6 are desirably provided at the front edge of the bottom 6. 12 represents a derrick boom hingedly connected at 12 to a platform 13 which is rotatable upon a circular track 14:. Said boom is arranged to be adjusted at suitable heights for operation through the medium of a line, such as 15, passing about pulley sheaves as 15 and 15 to a winding drum 16 on the platform 13. The platform also carries power driven drums 17 and 18 which are respectively employed for the bucket hoisting and hauling lines 19 and 20. The hoisting line 19 extends from the drum 17 about the boom- Specification of Letters Patent.

Patented Apr. 16, 1912.

Serial No. 653,894.

sheave 22 to support a pulley block 23 at the other end of the line. This block is provided with two sheaves 24' and 25. A rope 26, hereinafter designated as the sling, has one end fixedly secured to the casing of said block, thence the rope passes about the pulley wheel 11 at the rear end of the bucket, returning it makes a running engagement with the block over the sheave 24: thereof and has its other end secured to the front end of the bucket by means of a shackle 27 connected to the bucket rib 9. Secured to the bucket sides are draft lines 28 which are connected to a ring 29 which is also connected to the aforesaid hauling line 20, as most clearly shown in Fig. 1. Another line 30, which will be designiated as the controlling line, has one of its ends secured to the hauling line by the ring 29 and passes about the block sheave 25 and has its other end connected to the forward end of the bucket, as by being attached to the shackle 27.

The operation of the invention is as follows: The bucket is suspended by the sling 26 from the block 23 which is suspended by the hoisting line 19. The bucket is lowered to the ground by letting out the hoisting line and is dragged along the ground by the hauling line to dig and fill itself with the material to be excavated when the drum 18 is actuated. When the bucket has been filled, it is hoisted by the line 19 being wound upon the drum 18 while a tension is maintained upon the hauling line through the instrunientality of the brake 31, Fig. 2, retarding the unwinding of the hauling line in opposition to the power exerted through the hoisting line. As the bucket is thus elevated, the controlling line 30 is aifected by the hauling line 20 to cause the end of the controlling line attached thereto to be drawn forwardly resulting in the controlling line being thereby drawn through the block 23 to upwardly pull the forward end of the bucket into the position in which it is shown in Fig. 2. The boom 12 is then swung to carry the bucket to the point at which it is desired to discharge the contents.

To dump the bucket, the brake 31 is released, whereupon the weight of the bucket, together with that of the load, act to turn the bucket forwardly into the position in which it is shown in Fig. 3 to discharge the load from its forward open end. More particularly, when the line 30 is slack, the unbalanced loaded bucket is pulled down by the force of gravity and in which movementsheave attached to the rear end of the bucket, a hauling line secured to the forward end-of the bucket, a hoisting line, a pulley block suspended from said hoisting line, a flexible sling having one end secured to the forward end of the bucket, thence passing over a sheave of said block and the aforesaid rope sheave and having its other end secured to said block, and a controller line having one of its ends secured to said hauling line, thence passing through said block and having its other end secured to the bucket near its forward end.

2. The combination of an excavating bucket, a rope sheave attached to the rear end of the bucket, a hauling line, draft lines connecting said hauling line with the bucket at opposite sides of the latter, a

hoisting line, a pulley block supported by said hoisting line, a controlling line passing through said block and making operative connections between the forward end of the bucket and said hauling line, and a rope supporting the bucket at the opposite ends of the latter and making a running engagement with said block and with said rope sheave.

3. In apparatus of the class described, the combination with an excavating bucket, of a rope sheave attached to the rear end of said bucket, a hoisting line, a pulley block suspended from said line, a rope connected with the front end of the bucket and making a running engagement with both the rope sheave and the block, and a controlling line connectedwith the bucketadjacent its forward end and making a running engagement in the block.

4. The combination of a supported pulley block, a bucket, a rope sheave attached to the rear end of the bucket, a rope having its ends secured respectively to said block and to the forward end of the bucket and also making a running engagement with both the block and the rope sheave, and a controller line connected with the bucket neai its forward end and passing through said block.

' FRANCIS G. FRINK. Witnesses: HORACE BARNES, E. PETERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. I 

